db.GPRS_PRODUCT_HIS_FEE.find({"條件字段" : "412171211145135"},{_id:0})
db.GPRS_PRODUCT_HIS_FEE.find({"條件字段" : "412171211145135"},{_id:0,"查詢字段1":1,"查詢字段1":1,"查詢字段3":1,"查詢字段4":1,"查詢字段5":1,"查詢字段6":1})
或者
db.GPRS_PRODUCT_HIS_FEE.find({"條件字段" : "412171211145135"},{"查詢字段1":1,"查詢字段2":1,"查詢字段3":1,"查詢字段4":1,"查詢字段5":1,"查詢字段6":1},{_id:0})